* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html,
body {
  background: black;
  overscroll-behavior-x: none;
  overscroll-behavior-y: none;
  overflow: hidden;
}
body {
  width: 100vw;
  height: 100vh;
  text-align: center;
  line-height: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

canvas {
  width: 100dvmin;
  aspect-ratio: 1;
  z-index: 1;
}